/* ═══════════════════════════════════════════════════
   PowerGrid Market Simulator — V2 Desktop App Theme
   Windows-application aesthetic, 1400×860 fixed frame
═══════════════════════════════════════════════════ */
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{font-family:'Segoe UI',Tahoma,Geneva,sans-serif;font-size:13px;background:#008080;display:flex;align-items:center;justify-content:center;min-height:100vh}

/* ── App shell ──────────────────────────────────── */
.app{width:1400px;height:860px;display:flex;flex-direction:column;background:#f0f0f0;border:2px solid #0078d4;box-shadow:4px 4px 20px rgba(0,0,0,.5);position:relative;overflow:hidden}

/* ── Title bar ──────────────────────────────────── */
.titlebar{height:30px;background:linear-gradient(180deg,#4da3ff 0%,#0078d4 100%);color:#fff;display:flex;align-items:center;padding:0 8px;gap:8px;flex-shrink:0;user-select:none}
.titlebar .ti{font-size:14px}
.titlebar .ttl{font-size:12px;flex:1;font-weight:400}
.winctrls{display:flex}
.winctrls button{background:none;border:none;color:#fff;width:40px;height:30px;cursor:pointer;font-size:11px;font-weight:700;font-family:Arial,sans-serif;transition:background .1s}
.winctrls button:hover{background:rgba(255,255,255,.22)}
.winctrls .wb-close:hover{background:#e81123}

/* ── Menu bar ───────────────────────────────────── */
.menubar{height:22px;background:#f0f0f0;border-bottom:1px solid #adadad;display:flex;align-items:stretch;position:relative;z-index:100;flex-shrink:0}
.mi{padding:0 8px;display:flex;align-items:center;cursor:pointer;position:relative;user-select:none;font-size:12px;white-space:nowrap}
.mi:hover,.mi.open{background:#e5f1fb;outline:1px solid #0078d4;outline-offset:-1px}
.dd{display:none;position:absolute;top:100%;left:0;background:#f8f8f8;border:1px solid #adadad;box-shadow:2px 4px 8px rgba(0,0,0,.2);z-index:500;min-width:180px;padding:2px 0}
.mi.open .dd{display:block}
.ddi{padding:4px 24px 4px 16px;cursor:pointer;font-size:12px;white-space:nowrap;display:flex;justify-content:space-between;align-items:center;gap:14px}
.ddi:hover{background:#0078d4;color:#fff}
.dd-sep{border-top:1px solid #adadad;margin:2px 0}

/* ── Toolbar ────────────────────────────────────── */
.toolbar{height:30px;background:#f0f0f0;border-bottom:1px solid #d0d0d0;padding:3px 5px;display:flex;align-items:center;gap:1px;flex-shrink:0;overflow:hidden}
.tbb{background:none;border:1px solid transparent;padding:2px 7px;cursor:pointer;border-radius:2px;display:inline-flex;align-items:center;gap:4px;font-size:11.5px;color:#000;height:23px;white-space:nowrap;font-family:'Segoe UI',Tahoma,sans-serif}
.tbb:hover:not(:disabled){background:#e5f1fb;border-color:#0078d4}
.tbb:active:not(:disabled){background:#cce4f7}
.tbb.active{background:#cce4f7;border-color:#0078d4;color:#005a9e;font-weight:600}
.tbb:disabled{opacity:.4;cursor:not-allowed}
.tbb.go{background:linear-gradient(180deg,#3d9e3d,#256b25);color:#fff;border-color:#1a5c1a}
.tbb.go:hover:not(:disabled){background:linear-gradient(180deg,#4aaa4a,#2f7a2f)}
.tbb.halt{background:linear-gradient(180deg,#c44,#a00);color:#fff;border-color:#7a0000}
.tbb.tbb-run{background:linear-gradient(180deg,#3370c4,#0054a6);color:#fff;border-color:#003f88}
.tbb.tbb-run:hover:not(:disabled){background:linear-gradient(180deg,#4480d0,#1064b6)}
.tb-sep{width:1px;height:20px;background:#adadad;margin:0 3px;flex-shrink:0}
.tb-label{font-size:11px;color:#333;margin-left:4px;white-space:nowrap}
.tb-select{height:21px;padding:0 4px;border:1px solid #adadad;border-radius:2px;font-size:12px;font-family:inherit;background:#fff;color:#000}
.tb-select:focus{outline:none;border-color:#0078d4}
.toolbar .tbb{min-width:96px;justify-content:center}
.toolbar .tbb span{overflow:hidden;text-overflow:ellipsis}

/* ── Body layout ────────────────────────────────── */
.body-area{display:flex;flex:1;overflow:hidden;min-height:0}

/* ── Left nav ───────────────────────────────────── */
.nav{width:220px;background:#fff;border-right:1px solid #d0d0d0;display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}
.nav-hdr{background:#e0e0e0;border-bottom:1px solid #c0c0c0;padding:4px 8px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#333;display:flex;align-items:center;gap:5px;flex-shrink:0;user-select:none}
.nav-body{overflow-y:auto;flex:1;padding:2px 0}
.nav-sep{height:1px;background:#e0e0e0;margin:2px 0}
.nl{padding:5px 8px 5px 10px;cursor:pointer;display:flex;align-items:center;gap:6px;font-size:12px;color:#222;border-left:3px solid transparent;user-select:none;white-space:nowrap;overflow:hidden}
.nl:hover{background:#e5f1fb}
.nl.active{background:#cce4f7;border-left-color:#0078d4;color:#0078d4;font-weight:600}
.nl i{font-size:11px;color:#666;width:14px;flex-shrink:0}
.nl.active i{color:#0078d4}
.nl-group{padding:4px 8px 2px 10px;font-size:10px;font-weight:700;color:#888;text-transform:uppercase;letter-spacing:.4px;user-select:none}
.nl .nl-badge{margin-left:auto;background:#0078d4;color:#fff;font-size:9px;font-weight:700;padding:1px 5px;border-radius:8px;flex-shrink:0}
.nav-control{display:block;padding:5px 8px 7px 10px}
.nav-control label{display:block;font-size:10px;font-weight:700;color:#666;text-transform:uppercase;letter-spacing:.4px;margin-bottom:3px}
.nav-control .tb-select{width:100%;height:23px}
.nav-function i{color:#555}
.nav-inner-sep{margin:5px 0}

/* ── Center area ────────────────────────────────── */
.center{flex:1;display:flex;flex-direction:column;overflow:hidden;background:#fff;border-right:1px solid #d0d0d0;min-width:0}
.center-hdr{background:#f8f8f8;border-bottom:1px solid #d0d0d0;padding:4px 14px;display:flex;align-items:center;gap:8px;flex-shrink:0;height:30px}
.center-title{font-size:12.5px;font-weight:700;color:#000;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.center-body{flex:1;overflow-y:auto;padding:10px 14px;min-height:0}
.center-body.np{padding:0}
.uc-results-center{background:#0f172a;color:#e2e8f0;border-right:0}
.uc-results-center .message{margin-bottom:0}

/* ── Right panel ─────────────────────────────────── */
.right{width:260px;background:#f8f8f8;border-left:1px solid #d0d0d0;display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}
.rp-hdr{background:#e0e0e0;border-bottom:1px solid #c0c0c0;padding:4px 8px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#333;display:flex;align-items:center;gap:5px;flex-shrink:0;user-select:none}
.rp-body{flex:1;overflow-y:auto;padding:8px 10px}
.rp-sect{border-bottom:1px solid #d0d0d0;padding:8px 10px;flex-shrink:0}
.rp-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;color:#777;margin-bottom:4px}

/* ── Status bar ─────────────────────────────────── */
.statusbar{height:20px;background:linear-gradient(180deg,#4da3ff,#0078d4);color:#fff;display:flex;align-items:center;padding:0 8px;gap:8px;font-size:11px;flex-shrink:0;user-select:none}
.st{display:flex;align-items:center;gap:3px;opacity:.9;white-space:nowrap}
.st-sep{width:1px;height:12px;background:rgba(255,255,255,.35);flex-shrink:0}
.st-r{margin-left:auto;display:flex;gap:8px}
.dot{width:8px;height:8px;border-radius:50%;background:#6dff6d;box-shadow:0 0 4px #6dff6d;flex-shrink:0}
.dot.red{background:#ff6464;box-shadow:0 0 4px #ff6464}
.dot.yellow{background:#ffd700;box-shadow:0 0 4px #ffd700}

/* ── GroupBox ────────────────────────────────────── */
.gb{border:1px solid #adadad;padding:10px 12px 8px;margin-bottom:10px;position:relative;background:#fff}
.gb-t{position:absolute;top:-8px;left:8px;background:#fff;padding:0 5px;font-size:11px;font-weight:700;color:#333;white-space:nowrap}

/* ── Section bar ────────────────────────────────── */
.sh{background:#e8f0fa;border-left:3px solid #0078d4;padding:4px 9px;font-size:11px;font-weight:700;color:#333;margin-bottom:8px;display:flex;align-items:center;gap:5px}

/* ── Param grid ─────────────────────────────────── */
.p-grid{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:flex-start}
.pf{display:flex;flex-direction:column;gap:2px;min-width:0}
.pf label{font-size:11px;color:#444;font-weight:600;white-space:nowrap}
.pf input,.pf select{padding:2px 5px;border:1px solid #adadad;border-radius:2px;font-size:12px;font-family:'Segoe UI',Tahoma,sans-serif;background:#fff;color:#000;height:22px;width:110px}
.pf.wide input,.pf.wide select{width:175px}
.pf.fill input,.pf.fill select{width:100%}
.pf input:focus,.pf select:focus{outline:none;border-color:#0078d4}
.pf input:disabled,.pf select:disabled{background:#f0f0f0;color:#999}

/* ── Tabs ────────────────────────────────────────── */
.tabbar{display:flex;border-bottom:2px solid #d0d0d0;background:#f0f0f0;flex-shrink:0;padding:2px 4px 0;gap:2px}
.tab{padding:4px 12px;cursor:pointer;font-size:12px;border:1px solid transparent;border-bottom:none;background:#f0f0f0;color:#333;user-select:none;border-radius:2px 2px 0 0;white-space:nowrap}
.tab:hover{background:#e5f1fb}
.tab.active{background:#fff;border-color:#d0d0d0;border-bottom:2px solid #fff;margin-bottom:-2px;position:relative;color:#000;font-weight:600}
.tab-content{flex:1;display:flex;flex-direction:column;overflow:hidden;min-height:0}
.tabpanel{display:none;flex:1;overflow-y:auto;padding:10px 14px;min-height:0}
.tabpanel.active{display:block}

/* ── Tables ──────────────────────────────────────── */
.v2-table{width:100%;border-collapse:collapse;font-size:12px}
.v2-table th{background:#e8f0fa;border:1px solid #c8d8f0;padding:5px 8px;text-align:left;font-weight:700;font-size:11px;color:#1a3a6a;white-space:nowrap;position:sticky;top:0;z-index:1}
.v2-table td{border:1px solid #dde5f0;padding:4px 8px;vertical-align:middle;background:#fff}
.v2-table tbody tr:hover td{background:#e5f1fb}
.table-wrap{overflow:auto;border:1px solid #c8d8f0;margin-bottom:8px;background:#fff}
.table-wrap.mh240{max-height:240px}
.table-wrap.mh320{max-height:320px}
.table-wrap.mh480{max-height:480px}

/* Global table (JS-generated) */
table{width:100%;border-collapse:collapse;font-size:12px}
table th{background:#e8f0fa;border:1px solid #c8d8f0;padding:5px 8px;text-align:left;font-weight:700;font-size:11px;color:#1a3a6a;white-space:nowrap;position:sticky;top:0;z-index:1}
table td{border:1px solid #dde5f0;padding:4px 8px;vertical-align:middle;background:#fff}
table tbody tr:hover td{background:#e5f1fb}
table td input,table td select{height:20px;padding:1px 4px;border:1px solid #adadad;border-radius:1px;font-size:11px;font-family:'Segoe UI',Tahoma,sans-serif;background:#fff;color:#000;width:100%;min-width:60px}
table td input:focus,table td select:focus{outline:none;border-color:#0078d4}

/* ── Legacy buttons ──────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:2px;border:1px solid transparent;font-family:'Segoe UI',Tahoma,sans-serif;font-size:12px;font-weight:400;cursor:pointer;white-space:nowrap;text-decoration:none;color:#fff;height:23px;padding:2px 8px}
.btn-small{height:21px;padding:1px 7px;font-size:11.5px}
.btn-info{background:linear-gradient(180deg,#3370c4,#0054a6);border-color:#003f88}
.btn-info:hover:not(:disabled){background:linear-gradient(180deg,#4480d0,#1064b6)}
.btn-success{background:linear-gradient(180deg,#3d9e3d,#256b25);border-color:#1a5c1a}
.btn-success:hover:not(:disabled){background:linear-gradient(180deg,#4aaa4a,#2f7a2f)}
.btn-primary{background:linear-gradient(180deg,#2a5bd7,#1a4ec0);border-color:#103aa0}
.btn-primary:hover:not(:disabled){background:linear-gradient(180deg,#3a6ae0,#2a5ed0)}
.btn-danger{background:linear-gradient(180deg,#c44,#a00);border-color:#7a0000}
.btn-danger:hover:not(:disabled){background:linear-gradient(180deg,#d55,#b11)}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed}

/* ── Messages ────────────────────────────────────── */
.message{padding:5px 10px;font-size:11px;border-radius:2px;margin-bottom:6px;border-left:3px solid;display:block}
.message-success{background:#dff0d8;border-color:#3c763d;color:#3c763d}
.message-error{background:#f2dede;border-color:#a33;color:#a33}
.message-info{background:#d9edf7;border-color:#31708f;color:#31708f}

/* ── KPI cards (right panel) ─────────────────────── */
.kpi-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:8px}
.kpi{background:#fff;border:1px solid #d0d0d0;padding:6px 8px;border-top:2px solid #0078d4}
.kpi-val{font-size:13px;font-weight:700;color:#0078d4;margin-bottom:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kpi-lbl{font-size:9px;color:#888;text-transform:uppercase;letter-spacing:.4px;line-height:1.2}

/* ── Bid cards ────────────────────────────────────── */
.bid-card,.genco-card{border:1px solid #d0d0d0;margin-bottom:10px;background:#fff}
.bid-card-header,.genco-card-header{background:linear-gradient(180deg,#1a4a9a,#0d3578);color:#fff;padding:8px 12px;display:flex;justify-content:space-between;align-items:flex-start;gap:12px;border-bottom:1px solid #0d3578}
.bid-card-header h3,.genco-card h3{font-size:13px;font-weight:700;margin:0 0 3px;color:#fff}
.generator-meta{display:flex;flex-wrap:wrap;gap:4px;margin-top:2px}
.generator-meta span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:2px;padding:2px 6px;font-size:10px;color:#dbeafe}
.verify-status{font-size:11px;font-weight:700;color:#b0d8ff;white-space:nowrap;min-width:120px;text-align:right}
.bid-card-body,.genco-card-body{padding:10px 12px}
.bid-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px 12px;align-items:end;margin-bottom:8px}
.field{display:flex;flex-direction:column;gap:2px}
.field label{font-size:11px;color:#444;font-weight:600;white-space:nowrap}
.field input,.field select{height:22px;padding:2px 5px;border:1px solid #adadad;border-radius:2px;font-size:12px;font-family:'Segoe UI',Tahoma,sans-serif;background:#fff;color:#000;width:100%}
.field input:focus,.field select:focus{outline:none;border-color:#0078d4}
.card-actions{display:flex;gap:5px;justify-content:flex-end;flex-wrap:wrap;margin-bottom:8px}
.limits-note{font-size:10px;color:#888;margin-top:6px;line-height:1.4}

/* ── Segment table ───────────────────────────────── */
.segment-table-wrap{overflow-x:auto;border:1px solid #d0d0d0;margin-bottom:4px}
.segment-table{width:100%;border-collapse:collapse;font-size:12px;min-width:460px;background:#fff}
.segment-table th{background:#e8f0fa;border:1px solid #c8d8f0;padding:4px 8px;font-weight:700;font-size:11px;color:#1a3a6a}
.segment-table td{border:1px solid #dde5f0;padding:3px 8px;vertical-align:middle;background:#fff}
.segment-table input{height:20px;padding:1px 4px;border:1px solid #adadad;border-radius:1px;font-size:11px;font-family:'Segoe UI',Tahoma,sans-serif;background:#fff;color:#000;width:100%}
.segment-table input:focus{outline:none;border-color:#0078d4}
.segment-index{font-weight:700;color:#334;width:70px}
.segment-remove-cell{text-align:right;width:90px}

/* ── Password stack ──────────────────────────────── */
.password-stack{display:flex;flex-direction:column;gap:3px;min-width:140px}
.password-stack input{height:20px;padding:1px 4px;border:1px solid #adadad;border-radius:2px;font-size:11px;font-family:'Segoe UI',Tahoma,sans-serif;background:#fff;color:#000;width:100%}
.password-stack input:focus{outline:none;border-color:#0078d4}
.inline-actions{display:flex;gap:4px;flex-wrap:wrap;align-items:center}

/* ── Builder properties panel ────────────────────── */
#builderProperties>div{margin-bottom:6px}
#builderProperties label{display:block;font-size:11px;color:#555;font-weight:600;margin-bottom:2px}
#builderProperties input,#builderProperties select{height:22px;padding:2px 5px;border:1px solid #adadad;border-radius:2px;font-size:12px;font-family:'Segoe UI',Tahoma,sans-serif;background:#fff;color:#000;width:100%}
#builderProperties input:focus,#builderProperties select:focus{outline:none;border-color:#0078d4}
.builder-help{font-size:11px;color:#777;font-style:italic;margin:4px 0;line-height:1.4}
.builder-selection-title{font-size:12px;font-weight:700;color:#0078d4;margin-bottom:8px}

/* ── History tables ──────────────────────────────── */
.history-table-wrap{max-height:400px;overflow:auto;border:1px solid #c8d8f0;background:#fff}
#marketHistoryTable,#gencoHistoryTable{min-width:1800px;width:auto}
#profitsTable{min-width:960px;width:auto}

/* ── No-results box ──────────────────────────────── */
.info-section{background:#f8fafd;border:1px solid #d0d0d0;padding:14px;margin-top:8px}
.info-section h3{font-size:13px;font-weight:700;color:#0d3578;margin-bottom:8px}
.info-section p{font-size:12px;color:#555;line-height:1.5;margin-bottom:8px}

/* ── Features list ───────────────────────────────── */
.feature-list{display:grid;gap:5px}
.feature{padding:6px 8px;background:#f8f8f8;border:1px solid #e0e0e0;border-left:3px solid #0078d4;font-size:11px;color:#333;line-height:1.4}
.feature strong{color:#0d3578}

/* ── Launch cards (home page) ───────────────────── */
.launch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:12px}
.launch-card{border:1px solid #d0d0d0;background:#fff;border-top:3px solid #0078d4;padding:12px;cursor:pointer}
.launch-card:hover{background:#f0f7ff;border-color:#0078d4}
.launch-card h3{font-size:13px;font-weight:700;margin-bottom:4px;color:#000}
.launch-card p{font-size:11px;color:#666;line-height:1.4;margin-bottom:8px}

/* ── Generator card list ─────────────────────────── */
.generator-list{display:flex;flex-direction:column;gap:10px}

/* ── Canvas ──────────────────────────────────────── */
.canvas-toolbar{display:flex;gap:4px;align-items:center;flex-wrap:wrap;margin-bottom:6px}
#networkBuilderCanvas,#animatedNetworkCanvas,#gencoNetworkCanvas{display:block}

/* ── Diagram legend ──────────────────────────────── */
.diagram-legend{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px;font-size:11px;color:#444}
.legend-item{display:flex;align-items:center;gap:5px}
.legend-swatch{width:11px;height:11px;border-radius:50%;flex-shrink:0}

/* ── Scrollbars ──────────────────────────────────── */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:#f0f0f0}
::-webkit-scrollbar-thumb{background:#c0c0c0;border-radius:1px}
::-webkit-scrollbar-thumb:hover{background:#a0a0a0}